<script lang="ts">
export default {
  name: 'LoginCmp'
}
</script>

<script lang="ts" setup>
import { loginByCode, loginByPassword, sendMobileCode } from '@/services/user'
import { useUserStore } from '@/stores'
import { mobileRules, passwordRules, codeRules } from '@/utils/rules'
import { showFailToast, showSuccessToast, type FormInstance } from 'vant'
import { onUnmounted } from 'vue'
import { ref } from 'vue'
import { useRoute, useRouter } from 'vue-router'

const userStore = useUserStore()
const router = useRouter()
const route = useRoute()

const agree = ref(true)
// 准备一个变量控制【图标】的展示状态和 van-field 的 type 值
const show = ref(false)
const mobile = ref('13230000001')
const password = ref('abc12345')
const code = ref('')

const isPass = ref(true) // 是否是密码登录

const toggleShow = () => {
  show.value = !show.value
}

const login = async () => {
  if (!agree.value) return showFailToast('请同意协议')
  // #1 调用登录接口
  const r = await (isPass.value
    ? loginByPassword(mobile.value, password.value)
    : loginByCode(mobile.value, code.value))
  // #2 存到 store 和本地
  userStore.setUser(r.data)
  // #3 跳转到原页面或首页
  // returnUrl 接受的可能是一个字符串或数组
  // push 接收的参数只能是一个字符串
  // /user => 是我们的首页
  router.replace((route.query.returnUrl as string) || '/home')
  // #4 提示
  showSuccessToast('登录成功')
}

const formRef = ref<FormInstance>()
const time = ref(0) // 倒计时时间
// let timer = -1 // 定时器
let timer: number | null = null
const send = async () => {
  // !正在倒计时，后面不要再走了
  if (time.value > 0) return
  // #1 单独校验一下手机号
  await formRef.value?.validate('mobile')
  // #2 调用发送验证码的接口
  const r = await sendMobileCode(mobile.value, 'login')
  code.value = r.data.code
  // #3 提示
  showSuccessToast('发送验证码成功')

  time.value = 60
  clearInterval(timer as number)
  timer = window.setInterval(() => {
    time.value--
    if (time.value <= 0) {
      clearInterval(timer as number)
    }
  }, 1000)
}

onUnmounted(() => {
  clearInterval(timer as number)
})
</script>
<template>
  <div class="login-page">
    <cp-nav-bar
      right-text="注册"
      @click-right="$router.push('/register')"
    ></cp-nav-bar>
    <div class="login-head">
      <h3>{{ isPass ? '密码登录' : '短信验证码登录' }}</h3>
      <a href="javascript:;" @click="isPass = !isPass">
        <span>{{ isPass ? '短信验证码登录' : '密码登录' }}</span>
        <van-icon name="arrow"></van-icon>
      </a>
    </div>
    <!-- form 表单 -->
    <!-- 只要给 van-form 里面 van-button 组件绑定了 native-type="submit" 属性，就会自动触发 van-form 的 submit 事件（校验通过后） -->
    <van-form autocomplete="off" @submit="login" ref="formRef">
      <van-field
        name="mobile"
        placeholder="请输入手机号"
        type="tel"
        v-model="mobile"
        :rules="mobileRules"
      ></van-field>
      <van-field
        :rules="passwordRules"
        placeholder="请输入密码"
        :type="show ? 'text' : 'password'"
        v-model="password"
        v-if="isPass"
      >
        <template #button>
          <!-- Vue2 中给组件绑定 @click 会被认为是一个自定义事件，可以加 .native 修饰符变成给组件的根节点绑定事件 -->
          <!-- Vue3 删除了 .native 修饰符，给组件绑定的 @click 就会认为加在组件的根节点 -->
          <CpIcon
            @click="toggleShow"
            :name="`login-eye-${!show ? 'off' : 'on'}`"
          />
        </template>
      </van-field>
      <van-field
        v-model="code"
        :rules="codeRules"
        v-else
        placeholder="短信验证码"
      >
        <template #button>
          <span @click="send" class="btn-send" :class="{ active: time > 0 }">{{
            time > 0 ? `${time}s 后再次发送` : '发送验证码'
          }}</span>
        </template>
      </van-field>
      <div class="cp-cell">
        <van-checkbox v-model="agree">
          <span>我已同意</span>
          <a href="javascript:;">用户协议</a>
          <span>及</span>
          <a href="javascript:;">隐私条款</a>
        </van-checkbox>
      </div>
      <div class="cp-cell">
        <van-button block round type="primary" native-type="submit"
          >登 录</van-button
        >
      </div>
      <div class="cp-cell">
        <a href="javascript:;">忘记密码？</a>
      </div>
    </van-form>
    <div class="login-other">
      <van-divider>第三方登录</van-divider>
      <div class="icon">
        <img src="@/assets/qq.svg" alt="" />
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.login {
  &-page {
    padding-top: 46px;
  }

  &-head {
    padding: 30px 30px 50px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    line-height: 1;

    h3 {
      font-weight: normal;
      font-size: 24px;
    }

    a {
      font-size: 15px;
    }
  }

  &-other {
    margin-top: 60px;
    padding: 0 30px;

    .icon {
      display: flex;
      justify-content: center;

      img {
        width: 36px;
        height: 36px;
        padding: 4px;
      }
    }
  }
}
.van-form {
  padding: 0 14px;
  .cp-cell {
    height: 52px;
    line-height: 24px;
    padding: 14px 16px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    .van-checkbox {
      a {
        color: var(--cp-primary);
        padding: 0 5px;
      }
    }
  }
}
.btn-send {
  color: var(--cp-primary);
  &.active {
    color: rgba(22, 194, 163, 0.5);
  }
}
</style>
